xmlui.dri2xhtml.METS-1.0.item-type

Versión

Identificador del proyecto

Impacto

Resumen

The physical limitations on time-harmonic scattering processes are investigated on the basis of the optical theorem. Previously derived least upper bounds on the total scattering and absorption cross-sections are obtained from it in a straightforward manner. In addition, it reveals a practical upper bound for the bistatic cross-section when evaluated in any direction. It is proved further that th ...
[++]

The physical limitations on time-harmonic scattering processes are investigated on the basis of the optical theorem. Previously derived least upper bounds on the total scattering and absorption cross-sections are obtained from it in a straightforward manner. In addition, it reveals a practical upper bound for the bistatic cross-section when evaluated in any direction. It is proved further that the maximum upper bound of the bistatic cross-section occurs in the forward scattering direction and that the corresponding upper bound for the backscattering direction is four times smaller than this maximum value. Metamaterialinspired electrically small antennas and scattering particles that approach these upper bounds are demonstrated. These examples
numerically validate the derived upper bounds, as well as illustrate the important physical principles underlying them. [--]

Versión del editor

URI

Entidades Financiadoras

This work was supported in part by the Spanish Ministry of Science and Innovation, Dirección General de Investigación y Gestión del Plan Nacional
de I+D+I, Subdirección General de Proyectos de Investigación, Project Nos.
CSD2008-00066 and TEC2013-47753-C3-1-R, and by NSF contract number
ECCS-1126572.